J2EE Design Patterns
by William Crawford, Jonathan Kaplan

The unconfirmed error reports are from readers.  They have not yet been 
approved or disproved by the author or editor and represent solely the
opinion of the reader.

Here's a key to the markup:
        [page-number]: serious technical mistake
        {page-number}: minor technical mistake
        <page-number>: important language/formatting problem
        (page-number): language change or minor formatting problem
        ?page-number?: reader question or request for clarification

This page was updated April 18, 2007.


UNCONFIRMED  errors and comments from readers: 


(32)  diagram, first page half;
The requestApproval() method call is meant to be asynchronous. In the description, in
the paragraph under the diagram, it is said such method calls are meant to be
represented by "solid arrows with half of an open arrow-head (such as the one in the
bottom righthand corner)". Unfortunately the graph shows a regular synchronous method
call invocation full arrowhead.


(56) Figure 3-7;
The third function call for Decorator2 should be "postprocess()", not "preprocess()".


{62}  XML between 1st and 2nd paragraph;
indentation of </filter> close tag is inconsistent
extra unmatched <filter> open tag